(a)  
Apply and release the brakes fully at least five times.

 (b)  
Make sure that the brake operates properly.

 (c)  
Make sure the brake pressure plate moves freely while the brake operates.

 (d)  
Make sure that the pressure plate goes back to the initial postion each time that you release the brake.

 (e)  
Do this additional check to make sure that the pressure plate will operate properly: 1) Make sure that the brake pedals are released and pressure

 is released from the brake.
 2)  Manually move the pressure plate in the direction of the pistons. Hold the wear pins and push or pull on them to move the wear plate.
 3)  Move the pressure plate back in contact with the adjacent rotor disc.
 NOTE: Do not use a tool to apply force to the pressure
____ plate to make it move.
 4)  Look at the piston side of the plate and make sure that the pressure plate drive lugs are in their correct position.
 S 226-023
 (3)
Do a check for correct brake operation and a minimum run clearance.

 (a)  
Apply the brakes and make sure the brake stacks compress fully.

 (b)  
Release the brake and do a check on the run clearance.

 1)  Measure the clearance between the linings on the pressure plate and the No. 1 rotor assembly.
 NOTE: Make the measurements at four equally spaced
____ distances around the brake perimeter.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (c)  2) Make sure the minimum brake run clearance is 0.080 inch at all the measurement locations.Do a check for correct brake operation and a minimum run clearance four more times.
 NOTE:____ If the brake rotors are not aligned when the brake pressure is off, you need to align the rotors before you install the wheel.
 (4)  S 846-026Set the parking brake.
 (5)  S 846-027Remove the electrical power if it is not necessary (AMM 24-22-00/201).

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A
737-300/400/500MAINTENANCE MANUAL
 HYDRAULIC BRAKE ACCUMULATOR - REMOVAL/INSTALLATION
__________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task removes the brake accumalator. The second task installs the brake accumulator. The brake accumulator is located on the aft wall of the right wheel well.
 TASK 32-41-51-004-002
 2.  Remove the Hydraulic Brake Accumulator (Fig. 401)
______________________________________
 A.  References
 (1)  
AMM 32-00-01/201, Landing Gear Ground Lock Assemblies

 (2)  
AMM 29-15-00/201, Hydraulic Systems A, B, And Standby

 B.  
Access

 (1)  
Location Zones
 216 Left Main Wheel Well
 217 Right Main Wheel Well

 C.  
Procedure

 S 864-003
 (1)  
Remove the pressure from hydraulic system A and hydraulic system B (AMM 29-15-00/201).

 S 864-004

 (2)
Remove the pressure from the brake accumulator as follows:

 (a)  
Fully push down the two brake pedals twelve times or do step (b).

 (b)  
Fully push down and release the two brake pedals until the pressure indicated at the pressure gage for the brake accumulator does not decrease any more.

 S 034-006
 (3)  Remove the lockwire from the charging valve.
 S 034-005
 WARNING: LOOSEN THE SWIVEL NUT ONLY.  PRESSURE
_______DO NOT LOOSEN THE VALVE. IN THE VALVE CAN BLOW THE VALVE OFF AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Loosen the swivel nut on the charging valve a maximum of 2-1/4 turns to release the pressure from the accumulator.
　
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